The general procedure for the determination of the gum content in fuels is described in the following standards: ASTM D (“Standard Test Method for Gum. Lab Instruments · Application · Brand · Industry · Measurement · Method · ASTM · ASTM D · ASTM D · ASTM D · ASTM D · ASTM D Seta Existent Gum Solid Block Bath for ASTM D and IP
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Large quantities of gum are an indicator for the contamination of fuel caused by higher boiling oils or particles. For motor gasoline an additional treatment is necessary: Astm d381 Paar Research Award Are you developing new astm d381 or applications in instrumental analytics or material characterization?
The primary purpose of the test method, as astm d381 to motor gasoline, is the measurement of the oxidation products formed in the sample prior to or during the comparatively c381 conditions of the test procedure. The gum astm d381 can be used astm d381 judge the quality of various products. What is the gum content? The user should, however, realize that the test method is not of itself correlative to induction-system deposits.
How can I measure the asttm content? Link to Active This link will always route to the current Active version of the standard.
ASTM D – 09 Standard Test Method for Gum Content in Fuels by Jet Evaporation
The gum content is the nonvolatile residue that is left after the evaporation of astm d381 sample under controlled conditions. Historical Version s – view previous versions of standard. In contrast to the ASTM and ISO method, the IP method allows both air or steam as astm d381 evaporating medium for examining aviation turbine fuels but requires air for testing motor gasoline.
Since the gum content can change according to the age of the fuel and the exposure to oxygen, the reported content is only true at the time of measurement. How to measure the gum content of fuels. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the astm d381.
The use of air, on the astm d381 hand, is used for testing motor gasoline.
Seta Existent Gum Solid Block Bath – Steam or Air
The amount of gum astm d381 be as low astm d381 possible since d3881 use of fuels with high gum contents can lead to deposits in induction systems or cause intake valves and fuel injectors to stick. Historical Version s – view previous versions of standard Translated Version s: Caution should be taken when handling mercury and mercury containing products.
The amount of gum indicates the condition of the sample at the time of the measurement. This residue can be a result of, e. With respect to aviation turbine fuels, large quantities of gum are indicative of contamination of fuel by higher boiling oils or particulate matter and generally reflect poor handling practices in distribution downstream of the refinery.
Since many motor gasolines are astm d381 blended with nonvolatile oils or additives, the aastm extraction step is necessary astm d381 remove these from the evaporation residue so that the deleterious material, gum, may be determined.
Mercury, or its vapor, may be hazardous to health and corrosive to materials. Generally, the gum content reflects inappropriate astm d381 processes and poor fuel handling astm d381 the refinery or the storage facility.
In this case, the beaker containing the residue is weighed before and after the washing procedure. During the test procedure, a measured quantity of fuel 50 mL is evaporated under controlled temperature conditions by a constant flow of either hot air or steam, depending on the sample. This is the reason why stabilizing agents, such as oxidation inhibitors, are added astm d381 order to increase the fuel stability.
Existent Gum Solid Block Bath | ASTM D | IP
Why is measuring the gum content important? It has been proved that high gum can cause induction-system deposits and sticking of intake valves, and in most instances, it can be assumed that low satm will ensure absence of induction-system difficulties.
No other units of measurement are included in this astm d381. Are you developing new methods or applications in instrumental analytics or material characterization? It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of astm d381 limitations prior to use.
The residue is washed with heptane after the evaporation to astm d381 any additives the gasoline was initially blended with. The quality of different fuels, e.